Chain.



No. 785,873. 7 PATENTED MAR. 28, 1905. R. G. GOLDMAN.

CHAIN.

APPLIOATION FILED MAY 2. 1904.

' WITNESSES INVENTOR zwa' UNITED STATES Patented Maren 28, 1905.

PATENT OFFICE.

RUTHERFORD G. GOLDMAN, OF LOS ANGELES, CALIFORNIA, ASSIGNOR OF ONE-HALFTO C. R. HARRIS.

CHAIN.

SPECIFICATION forming" part of Letters Patent No. 785,873, dated March28, 1905.

Application filed May 2, 1904:. Serial No. 206,004.

1'0 all mil/0112 it may concern.-

Be it known that I, RUTHERFORD G. GOLD- MAN, a resident of Los Angeles,in the county of Los Angeles and State of California, have inventedcertain new and useful Improvements in Chains; and I do hereby declarethe following to be a full, clear, and exact description of theinvention, such as will enable others skilled in the art to which itappertains to make and use the same.

My invention relates to an improvement in chains, and more particularlyto what is known as art-chains, the object of the invention being toprovide improvements of this character in which electric wires areconcealed and constructed to afford the easy wiring of the same, and,further,to provide an improved chain of this character of neat andattractive appearance, simple in construction, comparatively cheap tomanufacture, and which will be a vast improvement on similar devices nowin use.

IVith these objects in view the invention consists in certain novelfeatures of construction and combinations and arrangements of parts, aswill be more fully hereinafter described, and pointed out in the claims.

In the accompanyingdrawings, Figure l is a perspective view illustratingmy improvements. Fig; 2 is a view in longitudinal section thereof. Fig.3 is a view showing the link-sections separated. Fig. A is alongitudinal section of one side of a complete link, and Figs. 5, 6, and7 are views of details of construction.

Each link of the chain comprises two longitudinal half-sections 1 and 2,constructed precisely alike, and form when together a hollow sheet-metallink. Each section comprises a sheet-metal strip stamped into the shapeshown and having its ends spaced apart to receive between them thetubular central portion 3 of the adjacentsection, which tubular portionis formed by bending over a flap of the strip, and the ends of thesections are made with enlarged tongues 4 to enter correspondinglyshapedrecesses 6 in the tubular portions 3 and hold the link-sectionstogether. In each tubular portion 3, a split spring-nipple 5 is locatedand has its ends projecting beyond the ends of the tubular portion andserves to spring the tongues 4 into recesses 6 and hold them in suchposition when the link-sections are brought together and pressureexerted thereon.

At one end, on its inner side, each link is provided with an opening 7,and at the diametrically opposite end of the link a tubular nipple 8 isprovided and adapted to enter the opening 7 in the adjacent link and tohold the links in proper formation and prevent chafing of the wirestherein, as will now be explained.

Electric wires 9, properly insulated, extend through the tubular centralportions 3 of one link-section in both directions, and through theopening 7 and nipple 8 of said link,through the adjacent nipples andopening of the next link, and through the next links in like mannerthroughout the chain, and being entirely hidv from view. The wires arefirst placed in one link-section and the other section sprung intoposition, and the next link provided with the wires in like manner untilthe chain of desired length is formed.

At the ends of the chain hollow eyes 10 are provided and comprisespherical balls with opposite openings to receive the end link and madein two sections to permit the eye being inserted on the link, and saideye or eyes have screw-threaded nipples 11 to be screwed into otherfixtures or any desired support.

A great many slight changes might be made in the general form andarrangement of the parts described without departing from my invention,and hence I do not restrict myself to the precise details set forth, butconsider myself at liberty to make such slight changes and alterationsas fairly fall within the spirit and scope of my invention.

Having fully described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

l. A chain, comprising a series of hollow communicating links andelectric wires concealed in said links, substantially as set forth.

2. A chain, comprising a series of hollow communicating links consistingeach of two longitudinal half-sections secured together, substantiallyas set forth.

3. A chain, comprising a series of hollow links, consisting each of twolongitudinal halfsections, means for locking said sections together,electric wires in said links, and openings at the ends of the linkspermitting the electric wires to pass from link to link, substantiallyas set forth.

4. A chain, comprising a series of hollow links, each having an openingon.its inner side at one end and a nipple at its other end to enter theopening in the adjacent link, and electric Wires passed through andconcealed in said links, substantially as set forth.

5. A chain-link, comprising two longitudinal half-sections with endsspaced apart and having locking-tongues, tubular intermediate portionsof the link-sections having recesses to receive the locking-tongues, andspringnipples projecting beyond the ends of the tubular portions tosecure by their spring tension, the locking-tongues in the recesses.

6. A chain, comprising a series of hollow links, electric wires passedthrough and concealed in the links of said chain, an end fitting,

comprising a hollow eye made up of two hollow half-sections surroundingthe end link and having a threaded nipple or extension thereon,substantially as set forth.

7 A chain comprising a series of communieating hollow open or separablelinks and electric wires concealed in said links, substantially as setforth.

8. A conduit for electric wires comprising a series of connected hollowcommunicating links.

9. A conduit for electric wires comprising a series of hollow links,each link passing through and communicating with the adjacent links.

10. A conduit for electric wires comprising a series of hollow separablelinks connected together end to end.

In testimony whereof I have signed this specification in the presence oftwo subscribing witnesses RUTHERFORD G. GOLDMAN.

Witnesses:

F. J. MCOLARY, CARL PAULZ.

